Door lock



Sept. 29, 1936.

c. R. VEGREN 2,055,565

DOOR LOOK Filed Deo. 22, 1954 2 Sheets-Sheet 2 COA/EAD E. VEG/.25N

Patented Sept. 29, 1936 UNITED STATES PATENT OFFICE DOOR LOCK of OhioApplication December 22, 1934, Serial No. 758,801

18 Claims.

This invention relates to door locks and more specifically to locks forsliding doors.

It isan object of this invention to provide a lock for sliding doorswhich shall eiect reduction in the number of parts, decrease in weight,reduction in cost and simplification of replacement of parts.

A further object is to provide a lock which may be furnished and appliedas a unit to a door or to a relatively stationary member with which thedoor is associated.

A further object is to provide locks capable of cooperation withexisting parts on a relatively stationary member with which the door isassociated to lock the door.

Other objects of the invention will become clear as the descriptionthereof proceeds.

Inthe drawings forming part of this specication:

Figure 1 is a fragmentary elevation of the double doors of a railway carto which a lock embodying the instant invention is applied;

Figure 2 is a view similar to Figure l, showing a modification;

Figure 3 is a View similar to Figure 1, showing a lock embodying theinstant invention applied to a box car;

Figure 4 is a vertical section taken on line 4 4 of Figure l;

Figure 5 is a vertical section taken on line 5-5 of Figure 1;

Figure 6 is a horizontal section taken on line 6--6 of Figure 1;

Figure '7 is a horizontal section taken on line 'I-I of Figure 2; and

Figure 8 is a horizontal section taken on line 8`-8 of Figure 3.

Referring first to Figures 1, 4, 5, and 6 of the drawings a lockembodying the instant invention is shown utilized in connection with thedouble doors of' automobile, furniture and the like freight cars. Suchdoors are utilized in the sides of railway cars in order to permit theloading and unloading of bulky commodities such as automobilesk andfurniture with increased facility. These doors are denominated main andauxiliary doors, the main door of the drawings being designated by thenumeral I 0 and the auxiliary door being designated by the numeral II.The auxiliary door II is provided with a` post I2 preferably rigidlysecured to the front vertical margin of the door as by means of rivetsI3. These rivets are utilized as well to secure to the post I2 and thefront vertical margin of the door II a substantially Z-shaped stopmember I4 which cooperates with a flange I5 provided on the post I2 toprovide a recess I 6 adapted to receive the front vertical margin of themain door I0. It being customary in closing the doors I0 and I I to rstclose the auxiliary door II it will be apparent that the member I4secured to the auxiliary door is utilized as a stop to limit the closingmovement of the main door.

The doors I9 and l I are substantially similar in construction in thesense that each comprises a metallic panel I'I preferably provided withspaced horizontal corrugations I8 which may merge into verticalcorrugations I9 provided in the panels adjacent the vertical edges ofthe door.

A locking device embodying the instant invention may be utilized tofasten the main and auxiliary doors together in closed position. Thelocking device embodies a substantially plate like or base member 2@secured preferably upon the crests of two adjacent horizontalcorrugations i8 in any desired manner, rivets 2| being illustrated asused for this purpose. The plate member 2i) is provided with a slot 22opening through a side of the member. The slot 22 provides means wherebythe plate member 2D may slidably support a lock member 23.

The lock member 23 is provided preferably at one of its ends with aninturned flange 24. Intermediate its ends the lock member is providedwith an abutment 25 and at its opposite end there is provided preferablyintegrally therewith a lug 26 directed inwardly with respect to theplate member ZS. The lug 26 is disposed within the slot 22 provided inthe plate member and is provided with an enlarged portion 21 larger thanthe width of the slot 22 in order to prevent disengagement of the lockmember from the plate member upon outward movement of the former. Theplate member 2D is reinforced adjacent the slot 22 by means of a Wall 28conforming in contour to the slot 22 and extending inwardly from theplate member into engagement with the panel I'I of the door intermediatethe corrugations I8. The side of the plate member through which the slot22 opens is provided adjacent said slot with respectively downwardly andupwardly extending walls 29 and 30 adapted to be overlapped by theenlarged portion 2l of the lug 26 in order to prevent slidingdisengagement of the lock member 23 from the plate member.

The constructions of the plate member and lock member, however, are suchthat the lug, together with the enlarged portion thereof, may

be disposed within the space defined by thewalls 28, 2% and Sil when thelock member is disposed at an angle of ninety degrees to the platemember. The lock member may then be properly assembled with the platemember by swinging the former through an angle of ninety degrees so asto position the lock and plate members as illustrated in Figure 6 of thedrawings. It will be apparent that after this assembly is made the lockmember will be retained against sliding and swinging disengagement in aplane parallel to the plate member and that when the plate member isfastened to the door the lock member cannot be disengaged from the platemember.

The plate member carries means adapted to support and retain a lockingpin 3 l. The means preferably takes the form of spaced housings 32 and33 within which the locking pin 3l is adapted to be received. Completedisengagement of the locking pin is prevented by means of a lug 34formed on the outer face of the pin adjacent the lower edge thereof. Thelug 34 in the vertical movement of the pin is adapted to engage the lug34A of the upper housing 32 and prevent further vertical movement of thepin.

Corresponding sides of the housing members 32 and 33 are inclined asindicated at 35 and 36. The adjacent side of the pin 3i iscorrespondingly inclined as indicated at 3l. Similarly, the abutmentmember25 provided on the lock member 23 is inclined, as clearlyindicated in Figure 1 of the drawings. By virtue of the inclination ofthe parts above mentioned it will be apparent that the lock of theinstant invention provides for automatic take-up of any play ortolerance which may exist between the main and auxiliary doors, therebyeliminating stresses imposed upon the elements of the locking device dueto impact which would otherwise be incident upon these parts by theback-and-forth movement between the main auxiliary doors.

In the closed position of the doors and in the locking position of thelocking device the parts of said device and the main and auxiliary doorswill be as illustrated in Figures 1, 4 and 6 of the drawings. It will bemanifest that in locking position the inturned iiange 2Q of the lockmember 23 has overlapping engagement with the front stop member le. Thepin 3l is received within the housings 32 and 33 and the inclined sideof the pin 3l abuts against the abutment 25 provided on the lock member.In this position of the parts of the locking device it will be apparentthat the main door i 8 cannot move in the direction of its openingtravel, that is, toward the right as viewed in Figures l and 6. It willalso be apparent that in the event that the main and auxiliary doors arenot in the abutting relationship shown in Figure 6, that is, in theevent that the main door is not fully closed the locking device will actautomatically to absorb the tolerance created by the separation of thedoors. This will become apparent when it is considered that the maindoor may move toward the left in order to properly abut the front stopI4 of the auxiliary door. rIhis movment of the main door will carry withit the pin Si which is mounted upon the plate member 2@ secured to themain door so as to eifect disengagement of the pin from the abutment 25.Upon the occurrence of this disengagement the pin will, by the action ofgravity, be lowered so that the engagement between the pin and theabutment will again be established. By virtue of the formation of theslot 22 in the plate member 2l) relative sliding movement between theplate member and the lock member may occur.

When it is desired to slide the door toward open position the lockingdevice may be released. Such release may be accomplished after a seal(not shown), and which is utilized to connect the pin to the platemember 2e is removed, by moving the pin 3l upwardly to a point above theupper edge of the lock member 23. The latter may then be swung outwardlyso as to be disengaged from the front stop i4 after which it may bepermitted to swing downwardly and assume the position designated by thedot and dash lines illustrated in Figure 1 of the drawings. The main andauxiliary doors may then be moved to open position.

Provision is made for the protection of the inwardly extending lug 2Eagainst breakage by impact with the closed end of the slot 22 providedin the plate member. To this end the plate member is provided with a rib3S capable of being engaged by a depending lug 3S on the lock mem'- ber23 prior to the engagement between the lug 23 and the closed end of theslot 22.

If desired, means may be provided to insure against movement of the lockmember 23 in the closing direction of the door when such movement isimparted to the main door It after the main door has been closed. Oneform of such means, utilized upon the double door constructionillustrated in Figures 1 and 6, is illustrated in Figures 2 and 7 of thedrawings. There is shown a bracket member e@ fastened by means of rivetsil to the front vertical margin of the f auxiliary door i l. The bracketmember lili may be provided with a pocket l2 within which the inturnedflange 53 provided on a lock member IM may be received. The inturnedange 53 is preferably inclined rearwardly and cooperates with aforwardly inclined ange l5 provided on the bracket member di? in orderto prevent outward movement of the inturned flange. Slight clearance isprovided between the inturned iiange d3 and a flange G6 formed on thebracket member and defining one margin of the pocket 42 of said member.It will be seen from the structure above described that should the lockmember 44 move in the direction of closing travel of the door, togetherwith the lock plate member and the pin, the inturned flange 43 of thelock member will engage the flange d@ of the bracket member lle, thuslimiting the movement of the lock member while permitting the continuedmovement of the door in its closing direction.

By means of this engagement and the continued closing movement of thedoor there will be effected disengagement between the pin 3i and theabutment 25 provided on the lock member M..

Consequently, the pin will again be automatically lowered so as to takeup the closing movement of the door and prevent the return thereof toits former position.

In Figures 3 and 8 the instant invention is illustrated embodied in alocking device applicable to railway box cars, that is, to railway carsutilizing a single door upon each side of the car. The car is providedwith a front door post l? to one leg 48 of' which is secured a frontstop member 49. The front stop member is adapted to be engaged by thefront edge of the door 5G to limit the closing movement of the door. Tolock the door 5E! in its closed position a locking device substantiallysimilar to the locking device hereinabove described and illustrated inFigures Astruction from Ythe lock member :2.3.

lland ,6;may be utilized. This locking device'emibodies the 'platemember 20 Aprovided with aislot 2.2 through which extends a .lug '26formed on a :l0ck fmember 5|, differing somewhat in its convThe lock.member 5| .is provided with the abutment 25 adapted to cooperate withpin k3l 'retained Vupon the Vplate .member 2l] by means of housings ,32and 33.

`The llock member 45l differs essentially from that .disclosed inFigures l and ofthe .drawings in that the inturned'flangeZ thereof,which `has Voverlapping,engagement with ,the front stopmember 49, isprovided with a ange 53 extending iin ythe direction of opening movementof the door. This Vflange 53 overlaps the front stop 'member 49 -so Aasto prevent disengagement between the jlock member 5l and the :front stopmember by an outward movement of the lock member.

In a railway box car, as well, means may be provided in order to insurerelative movement between the sliding door ,and the Alock member. Suchmeans is illustrated in Figure 18 ofthe drawings and tak-es the form ofan angle member 54, one 4flange 155 of which is riveted to the front.door p ost 41 while the other flange .56 extends `outwardly from thecar in overlapping relationship with the inturned `flange 52 of the lockmem- -ber when the latter is Ain vits locking position.

It will be 4apparent that numerous changes .and modifications in thedetails of the `invention will be clear to those skilled in the art. Itis intended, therefore, that all such modifications and changes becomprehended within this invention, which is to be limited only by theScope of the claims appended hereto.

I claim:

1. A unit locking device comprising a plate member, a lock membercarried by said plate member .and a locking pin carried by said platemember, said pin being cooperable with said lock member to maintain thelatter in locking position, said Vplate member .being provided with anelongated slot opening through a side thereof,

`said lock member having a vlug extending therefrom disposed for slidingmovement in said slot, said lug 'having a head larger than the width ofsaid slot.

.2. A unit locking device comprising a plate member, a `lock membercarried by said plate member and a .locking pin Acarried 'by said platemember, said pin being cooperable with said lock member to maintain thelatter in locking position, said plate member being provided with .anelongated slot opening through a side thereof, said lock member having alug extending therefrom disposed for sliding movement in said slot, saidlug having a head larger than the width of said slot and means on saidplate member cooperating with said head to prevent sliding disengagementof said lock member.

3. A unit locking device comprising a plate member, a lock membercarried by said plate member and a locking pin carried by said platemember, said pin being cooperable with said lock member to maintain thelatter in locking position, said plate member being provided with anelongated slot opening through a side thereof, said lock member having alug extending therefrom, said lug having a portion larger than the Widthof said slot, said lug being disposed for sliding movement in said slotby a relatively anguiar movement between said lock and plate :membersand means Yfor preventing sliding disengagement of said lock member.

4. In a railway car having a relatively stationary member, a slidabledoor and .a front stop Imember for said door secured `to said.relatively Stationary member, in combination, a locking .device forsaid door comprising a plate lmember secured thereto, a lock memberslidably supported by said plate member and a locking pin .carried bysaid plate member, Vsaid lock member having an angularly related angeadapted to overlap said front stop member wherebysaid lock member isprevented from moving in the direction of opening travel of the door,means secured to .said relatively stationary member for limiting Y'movement of said lock member in the direction of closing movement ofsaid door, said pin being cooperable with said lock member to maintainill) said overlap between said flange and said front stop.

5. lin a railway car having a relatively stationary member, a slidabledoor and a iront stop member for said door secured to said relativelystationary member, in combina-tion, a locking device for said doorcomprising `a .plate member secured thereto, a lock member slidablysupported by said plate member and a downwardly tapered locking pincarried by said plate member, said lock member having an angularlyrelated flange adapted to abut said front stop member, a lug provided onsaid lock member, one side of said pin being cooperable with said lug tomaintain said abutment to lock said door.

6. In a railway car having a relatively stationary member, a slidabledoor and a front stop member for said door secured to said relativelystationary member, said front stop member comprising an angular portionspaced from said relatively stationary member, in combination, a lockingdevice for said door comprising a plate member secured thereto, a lockmember slidably supported by said plate member and a locking pin carriedby said plate member, said lock member having a hook-shaped flangeadapted Ato have hooked engagement with said angular .portion of saidfront stop member, said pin being cooperable with said lock member tomaintain said hooked engagement to lock said door.

7. In a railway car having a relatively stationary member, a slidabledoor and a front stop member for said door secured to said relativelystationary member, in combination, an outwardly directed flange carriedby said relatively stationary member, a locking device for said doorcomprising a base member secured thereto, a lock member slidablysupported by said base member and a locking pin carried by said platemember, said lock member having an inwardly directed angularly relatedflange adapted to have overlapping engagement with said rst mentionedflange and means on said lock member cooperable with said pin toestablish locking position of said device.

8. In a railway car having a relatively stationary member, a slidabledoor and a front stop member for said door secured to said relativelystationary member, said stop member having an outwardly extendingportion in combination, a locking device for said door comprising a lockmember, means for slidably securing said lock member upon said door anda locking pin provided on said door, said lock member having an inwardlyextending angularly related flange adapted to abut said front stopmember, said pin being cooperable with means on said lock member in theoperative position of said locking device.

9. In a railway car having a relatively stationary member, a slidabledoor associated with said relatively stationary member, in combination,an outwardly projecting flange carried by said relatively stationarymember, a locking device for said door comprising a lock member, meansslidably securing said lock member upon said door and a locking pinprovided on said door, said lock member having an inwardly projectingangularly related flange adapted to have overlapping engagement withsaid rst mentioned ange and means on said lock member cooperable withsaid pin to establish locking position of said device.

10. In a railway car having a relatively stationary member and aslidable door member, in combination, a locking device for said doorcomprising a base member secured thereto, a lock member slidablysupported by said base member and a locking pin carried by said basemember, means provided on said lock member, an abutment member for saidlock member secured to said relatively stationary member, said lockmember engaging said abutment member and said pin engaging said means inthe locking position of said device, said pin and said means beingconstructed and associated whereby said door and pin are capable ofmovement toward closed position relative to said lock member in thelocking position of said device, said pin automatically engaging saidmeans upon completion of said door movement.

1l. In a railway car having a relatively stationary member and aslidable door member, in combination, a locking device for said doorcomprising a base member secured thereto, a lock member slidablysupported by said base member and a locking pin carried by said basemember, means provided on said lock member, an abutment member for saidlock member secured to said relatively stationary member, said lockmember engaging said abutment member and said pin engaging said means inthe locking position of said device, said lock member being slidablerelative to said base member in the locking position of said device.

12. In a railway car having a relatively stationary member and aslidable door member, in combination, a locking device for said doorcomprising a lock member, means slidably securing said lock member uponsaid door and a locking pin having downwardly converging sides carriedby said means, means provided on said lock member, an abutment for saidlock member secured to said relatively stationary member, said lockmember engaging said abutment member and one side of said pin engagingsaid lock member means in the locking position of said device.

13. In a railway car having a relatively stationary member and aslidable door member, in combination, a locking device for said doorcomprising a lock member, means slidably securing said lock member uponsaid door and a locking pin having downwardly converging sides carriedby said means, means provided on said lock member, an abutment for saidlock member secured to said relatively stationary member, said lockmember engaging said abutment member and one side of said pin engagingsaid lock member means in the locking position of said device, said doorbeing slidable in the direction of closing movement while said device isin locking position, and means secured to said relatively stationarymember engageable with said lock member to prevent movement of said lockmember in said direction during movement of said door.

14. A unit locking device comprising a plate member, a lock membercarried by said plate member and a locking pin carried by said platemember, said pin being cooperable with said lock member to maintain thelatter in locking position, said plate member being provided with anelongated slot, said lock member having a lug extending therefromdisposed for sliding movement in said slot, said lug having a headlarger than the width of said slot.

15. A unit lock device for sliding doors comprising a base memberadapted to be secured to a said door, a lock member secured upon theoutside of said base member for relative horizontal sliding movement, avertically reciprocable locking pin secured upon the outside of saidbase member, an angular flange on said lock member and a lug extendingfrom said lock member cooperable with said pin for the purpose setforth.

16. A unit lock device for sliding doors comprising a base memberadapted to be secured to a said door, a lock member secured upon theoutside of said base member for relative horizontal sliding movement, adownwardly tapering vertically reciprocable locking pin secured upon theoutside of said base member, an angular iiange on said lock member and alug extending from said lock member cooperable with said pin for thepurpose set forth.

17. A unit locking device for sliding doors comprising a base memberadapted to be secured to a said door, a lock member carried by said basemember for relative horizontal sliding movement, a downwardly taperingvertically reciprocable locking pin carried by said base member, anangular flange on said lock member and a lug extending from said lockmember cooperable with said pin for the purpose set forth.

18. A unit locking device for sliding doors comprising a base memberadapted to be secured to a said door, a lock member carried by said basemember for relative horizontal sliding movement, a downwardly taperingvertically reciprocable locking pin carried by said base member, aflange extending from said lock member at an angle to the plane thereofand a lug extending from said lock member cooperable with said pin forthe purpose set forth.

CONRAD R. VEGREN.

